As far as advertising viral videos, no one beats the Old Spice guy played by Isaiah Mustafa.

OK, here's some sad videos. A cat tries to revive his friend.

A squirrel protects his friend's dead body from crows.

Here's an amazing dog who saves another dog on the highway. This one's a must-watch.

OK, this one's hard to watch and I have to warn you that there's animal on animal violence in this one. A mother deer comes to rescue her baby from a cat who helps out but being a cautious mother, she beats up a dog who gets near and the cat mistakenly gets too brave at the end and almost gets the same. The lesson here is if you see a mother animal with her kids, stay far away!

Ending on a positive and fun note, I present two awesome dogs.

If you think I missed any from this year, be sure to leave the video in the comments section. Happy New Year!